EP1469282A2 - Device for producing and projecting light marks - Google Patents

Abstract

The device has a light source device (Q) for generating and radiating a primary light beam bundle (L1), collimating optics (K) for receiving the primary light beam bundle (L1) and for collimating, parallelizing and expanding the primary light beam bundle (L1) into a secondary light beam bundle (L2). The secondary light beam bundle (L2) is collimated in a directed manner and projection optics (P) receive a portion (L2Z) of the secondary light beam bundle (L2) which is converted into a tertiary light beam bundle (L3). The beam bundle (LM) is marked for a light mark (ML, MP) and radiated and projected. The projection optics (P) is acted upon by one of the secondary light beam bundle and a portion of the secondary light beam bundle so that central beam bundle of the secondary light beam bundle can be radiated through an area (ZA) of the projection optics (P). A marginal beam bundle (L2R) of the secondary light beam bundle is adjacent to the central beam bundle of the secondary light beam bundle can be radiated directly past the edge or outer surface of the area of the projection optics. The central beam bundle of the secondary light beam bundle is diffused through interaction with the cylindrical lens (Z) and can be projected substantially in the shape of a line as part of the tertiary light beam bundle or as a line mark beam bundle (LML) for a light mark (ML). A marginal beam bundle of the secondary light beam bundle can be projected substantially in a point and a spot as part of the tertiary light beam bundle or as a point mark bundle (LMP) for a light mark (MP).

Description

The invention relates to a device for generating and projecting light marks according to the preamble of claim 1.

It is known in manufacturing processes, constructive measures or also to use in construction projects devices through which light brands in appropriate Can be generated and projected. These lights become brands used in the above-mentioned operations absolute or relative positions, Orientations and the like of objects, premises or Define locations and display to a user.

Known devices for generating and projecting light marks have to a light source device, a collimating optics and a projection optics on. The light source device is used for generating and emitting a primary light beam. The collimation optics is to receive the primary Light beam and collimation, parallelization and thereby Expansion into a secondary beam of light and directional emission formed and provided the secondary light beam. The Projection optics serve to receive at least part of the secondary light beam and the conversion of the secondary light beam in at least a suitable for at least one light mark tertiary light beam or marking beams and their output and thereby to the projection at least one light mark.

It is disadvantageous that only by a considerable effort both simultaneously Line markings, so light marks in the form of a line, as well as point or Fleck marks, so light marks in the form of a dot or spot generated and can be projected. As a rule, several are independent of each other operable and yet to be adjusted and reconciled Projection units with corresponding optics necessary.

The invention has for its object to provide a device for generating and Projecting of light marks of the type mentioned in such a way that good and easy in a very simple and yet reliable way visible point marks and line marks with particularly low optical Expenditure and generated as far as possible avoid adjustment operations and are projectable.

The object is in a device for generating and projecting light marks of the type mentioned according to the invention with the characterizing Characteristics of claim 1 solved. Advantageous developments of the invention Apparatus for generating and projecting light marks are subject matter the dependent subclaims.

The inventive device for projecting light marks is general characterized in that the projection optics with the secondary light beam or part of it is acted upon such that an area the projection optics essentially of a central beam of the secondary Light beam essentially completely durchstrahlbar in such a way is and that at least one edge beam of the secondary light beam adjacent to the central beam of the secondary light beam directly on the edge or mantle of the projection optics passing out such a way is that the central beam of the secondary light beam dispersible by interaction with the projection optics and as part of the tertiary light beam or as a line marker beam for a Light mark is essentially projected in the form of a line and that the at least one marginal ray bundle of the secondary light beam as Part of the tertiary light beam or as a spot mark beam for a light mark can be projected substantially in the form of a dot or spot is.

A preferred embodiment of the device according to the invention for projecting of light marks is characterized in that the projection optics having a cylindrical lens. Furthermore, the cylindrical lens is with the secondary Light beam or the part thereof acted upon such that a cylinder portion area the cylindrical lens as the area of the projection optics in Essentially from a central beam of the secondary light beam for the light mark substantially in the form of a line substantially is completely durchstrahlbar and that at least one edge of the beam secondary light beam for the light mark substantially in shape a spot or spot adjacent to the central beam of the secondary Light beam directly on the edge or mantle of the cylinder portion as a border or coat of the area of the projection optics broadcastable by is.

In this way, using a single light source device with a single projection optic with or in the form of a cylindrical lens simultaneously both a light mark in the form of a line, namely a line mark, as well a light mark in the form of one or two points, namely a point mark, can be generated and projectable. Due to the fixed geometry by use a single cylindrical lens have the line mark and the dot mark or Point marks to each other a given spatial relationship without it this requires an adjustment. Furthermore, in the device according to the invention the number of optical components compared to conventional approaches reduced, so that here reduced maintenance and reduced Costs in the manufacture and maintenance of such a device result.

One aspect of the invention is thus a cylindrical lens provided in the projection optics with a light beam, which consists of a primary beam of light through collimation, parallelization and expansion as secondary Light beam results in such irradiation and apply to this, that a part of the secondary light beam, namely a central beam a part of the cylindrical lens, namely a cylinder portion area thereof or a cylinder segment thereof, substantially complete radiates through and that another part of the secondary light beam, namely at least one edge beam directly on the edge or mantle the cylinder lens, namely the cylinder portion area, which is substantially is completely irradiated, passed by or can be sent out. The Central beam is irradiated by interaction or refraction with the Cylinder section area scattered or dispersed, so that after Passage through the cylinder portion area or through the cylinder segment in use or in operation on a remote projection screen one Light mark in the form of a line or a line mark results. The marginal beams or the edge beam or run on the outside of the jacket the cylindrical lens in the region of the cylinder section over and thus forms in Operation and in the application on a projection surface then provided a corresponding point mark, ie a light mark in the form of a dot or Spot. By a corresponding embodiment, the point mark and the Line mark are placed in a particular spatial relation to each other, so that z. B. on the line mark by the point mark a certain spatial Define reference point and display.

All this is in the state of the art, if at all only with a considerable Extra effort with a plurality of projection systems, namely for each Light brand or for each type of light mark a separate, possible.

Particularly advantageous projection and imaging conditions arise when the light source device according to a preferred embodiment the device according to the invention for generating and emitting substantially coherent and / or monochromatic light for the primary Light beam is designed. Then that's when you get really sharp Imaging conditions in operation.

Under certain symmetrical conditions, it is possible even at the Use of two peripheral beams, which in operation at opposite Run past edge areas of the cylinder section area, in the far field of Light radiation field, an interference of two in the near field still separate point marks to achieve a single common point mark. This has particular in terms of brightness and thus the perceptibility of the Point mark advantages.

To generate coherent and / or monochromatic light are different Realizations or embodiments for the light source device conceivable.

It is advantageous if the light source device has a laser light source or is formed by such. This can be monochromatic coherent Create light with a high intensity

In principle, any laser light source can be used, with particular advantage the use of a laser diode or an array of a plurality Laser diode as a light source device or in the range thereof. These are particularly compact and have a relatively low energy consumption.

Strong influence on the quality in terms of brightness, contrast and sharpness of image in the case of the light marks, the beam shape of the secondary light beam, which interacts with the projection optics. This is in Advantageously, in a further embodiment of the invention Apparatus for beam shaping with respect to the secondary light beam between the collimating optics and the projection optics an aperture device intended. This diaphragm device gives the secondary light beam a certain symmetrical shape and spatial extent. The aperture device can also be part of the collimation optics.

The aperture device can be used as a circular shutter or in certain applications be designed as a diaphragm in the form of an ellipse. But also conceivable are rectangular panels. These shapes can form the aperture device itself or it can be used as components of a diaphragm device with a plurality of diaphragms and optionally other components.

It is particularly advantageous if the respective aperture device, for. B. as a circular aperture or a rectangular aperture, in relation to the cross section of the limiting secondary beam of light concentric and is arranged. This means that the respective aperture device has a geometric Has center or center of gravity and that this geometric center or center of gravity with the geometric center or center of gravity of the cross section of the secondary light beam is approximately coincident.

In the cylinder lens for the projection optics are basically all Cylinder shapes. However, it is particularly advantageous because of its simplicity the basic shape of a circular cylinder. Accordingly, in a particularly preferred Embodiment of the device according to the invention, the cylindrical lens in Formed a circular cylinder and in particular has a corresponding Circle radius R for the underlying circular area and a corresponding circle Symmetry axis X, with respect to the cylindrical lens rotationally symmetric is trained.

To further concretize the principle of the invention, the size ratios the individual optical components, the respective beam and the wavelengths of light or wavelengths of light used chosen trained.

The cylindrical lens has z. B. an optical effective diameter D. This is, especially with respect to the secondary light beam, approximately identical with the double radius R of the underlying circle base area, if the Cylindrical lens is a circular cylinder is used.

In a particularly advantageous embodiment of the device according to the invention is by choice of the type and / or the geometry of the light source device, the Kollimationsoptik and / or their geometric and / or positional relationship to each other, the secondary light beam having a substantially elliptical cross section can be formed. This particular has a certain large Half-axis a and a certain small semi-axis b.

In one embodiment of the device according to the invention, it is provided that the large semiaxis a of the cross section of the secondary light beam chosen to be approximately perpendicular to the axis of symmetry X of the cylinder axis extending and trained.

Then it is advantageous that the large semiaxis a of the cross section of the secondary Light beam in about 8 times the radius R of the cylindrical lens or corresponds to 4 times the optical effective diameter D of the cylindrical lens. additionally or alternatively, it is provided that the small semiaxis b of the cross section of the secondary light beam about 2 times the radius R of the Cylindrical lens or the 1-fold effective diameter of the cylindrical lens corresponds.

In a further embodiment of the device according to the invention is then provided a circular aperture whose radius Rkb is about 4 times the radius R the cylindrical lens or about 2 times the optical effective diameter D of the cylindrical lens equivalent. Alternatively, a rectangular shutter may be provided, which has a first edge c perpendicular to the axis of symmetry X of the cylindrical lens, about 3 times the radius R of the cylindrical lens or the 1.5 times optical Effective diameter D of the cylindrical lens corresponds, and which a second Edge d parallel to the axis of symmetry X of the cylindrical lens has, which approximately 5 times the radius of the cylindrical lens or about 2.5 times the effective optical diameter D corresponds to the cylindrical lens.

In an alternative embodiment of the device according to the invention it is provided that the large semiaxis a of the cross section of the secondary light beam extending approximately parallel to the axis of symmetry X of the cylindrical lens chosen and trained.

In this variant, it is particularly advantageous if the large semi-axis a of the cross section of the secondary light beam is approximately 12 times Radius R of the cylindrical lens or about 6 times the optical effective diameter D the cylindrical lens corresponds. Alternatively or additionally, it is then provided that the small semiaxis b of the cross section of the secondary light beam in about 4 times the radius R of the cylindrical lens or about twice Effective diameter D of the cylindrical lens corresponds.

Also in this embodiment of the device according to the invention are a Circle or alternatively a rectangular cover conceivable.

When using a circular shutter, it is advantageous if its radius Rkb about 4 times or 6 times the radius R of the cylindrical lens or about the 2 times or about 3 times the optical effective diameter D of the cylindrical lens equivalent.

When using the rectangular shutter, this has a first edge c vertically to the axis of symmetry X of the cylindrical lens, which is about 3 times or about the 6-fold radius R of the cylindrical lens or about 1.5 times or about the 3 times the optical effective diameter D of the cylindrical lens corresponds. Furthermore owns the rectangular aperture a second edge d parallel to the axis of symmetry of the X Cylindrical lens, and corresponding to about 4 times the radius R of the cylindrical lens or about 2 times the optical effective diameter D of the cylindrical lens.

The embodiments described so far are suitable for a line mark form on which as a reference point one or two point marks to let.

In a particularly preferred embodiment of the device according to the invention However, the cylindrical lens is formed in the form of a slant cylinder, wherein at least one inclined relative to the axis of symmetry X of the cylindrical lens Base A or end face A is provided. This inclined base A or end surface A is provided formed mirrored. The arrangement is chosen so that through the mirrored base A or end face A at least a part of the secondary light beam is so reflective, that outside the plane passing through the device itself and through the tertiary light beam is formed for the light mark, an external and another light mark essentially in the form of a dot or spot can be mapped or projectable.

By this measure is thus achieved that from the projection plane for the Line mark out, z. But not exclusively perpendicular thereto, a dot mark imaged or projected outwards or downwards. So can z. B. in the application, the line mark on a wall of a room in a building projected while the additional or further point mark on the Ceiling or on the ground appears and serves as another reference.

In a particularly advantageous embodiment of the device according to the invention both base surfaces A or end surfaces A of the cylindrical lens are inclined, mirrored and formed such that two external and further light marks substantially in the form of a dot or spot can be imaged or projected.

These and other aspects of the present invention will become apparent from the following presentation:

Conventionally, line marks z. As a series of discrete ones Points are generated by means of diffractive elements. The disadvantage here is that the line is not continuous. Another conventional line brand is produced by a simple cylindrical lens. The downside is that the Intensity is distributed on a wide line, making the line at great distance in certain lighting conditions of the environment no longer clearly visible is. There is no reference point on the line, but in many cases is desired. For example, if the line is vertically aligned to one determine leveled point on the line.

One idea of the invention is the mapping of a reference point to a line mark to allow at a great distance without giving up the continuity of the line without. This is achieved by the device according to the invention.

The diameter of the collimated or focused at a certain distance Laser beam is greater than the optical effective diameter of the cylindrical lens. Thus, two edge regions of the collimated laser beam can be unhindered continue to spread forward. In the near field, one line and two points are reversed the center formed. From a certain distance from the cylindrical lens, which depends on the outer diameter of the cylindrical lens, ie in the far field, the two marginal beams of the points will interfere to one point.

The beam diameter and the aperture can take certain forms and be designed at the edges of the main laser beam so that the formation of the Point in the far field is affected.

The panels may be in the form of a circle or rectangle.

The major axis or large semiaxis a of the laser beam can be perpendicular to the cylindrical lens axis Z stand.

For example, the marginal ray can be cut through a circular aperture, so that the one side of the marginal ray gets a curvature, d. H. the marginal ray takes an asymmetrical shape. In contrast, the marginal ray is a rectangular aperture approximately symmetrical. The diffraction image will be better Have symmetry.

Influence of the aperture size: The larger the aperture diameter or the longer the Width of the rectangle becomes, the narrower the diffraction image appears in horizontal Direction, d. H. it results in a better spatial resolution in horizontal Direction.

The major axis or semi-major axis a of the ellipse of the cross section of the secondary Light beam of the laser beam can also be parallel to the cylinder axis the cylindrical lens stand. These embodiments are also called line-dot lasers designated. Then the aperture shape has more influence on the diffraction pattern as the aperture size, because the width of the laser beam in these cases requires is limited. The attempt to increase the width brings the big disadvantage energy loss, the visibility of the line mark also suffers.

There may additionally be two spot beams aligned in opposite directions for external point marks are given by two mirror surfaces integrated on the cylindrical lens. The two ends of the cylindrical lens are then with Mirror surfaces provided which z. B. 45 ° to the cylinder axis. In addition, lie they are 90 ° to each other. This embodiment is also called a line multibeam laser designated.

The major axis a of the ellipse of the laser beam can then be parallel to the connecting line be aligned with two round aperture. At the two 45 ° mirror surfaces A, two partial beams are deflected by 90 °. The short side (or the width) b of the cross section of the laser beam must be greater than that Diameter D of the cylindrical lens, so that a part of the laser beam passing both sides of the cylinder lens can continue to spread. The two in this way generated beam points are 90 ° perpendicular to the surface, which is the line laser spans.

It can also be a combination of line-dot and line multibeam lasers in one device be provided, as shown in Fig. 12. It consists of a module A as a line multibeam laser and a module B as a line-dot laser. The two modules are mounted on a support so that the two line marks the modules A and B are perpendicular to each other, the two dot marks pointing up and down in the lot. The point lasers of modules A and B form a rectangular coordinate system and have the same origin (coincidence). The whole construction is on a pendulum, for example on a stable one String or thread, hung up. By the action of gravity is the whole Structure aligned in the Lot and can swing back and forth.

Orientations of the line-dot laser:

• Die Linie ist in waagerechter Lage.
• Die Linie ist im Lot, so dass die Punktmarke in horizontaler Lage liegt.
• Die Linie ist so ausgerichtet, dass die Punktmarke über dem Modul und im Lot liegt.

Three possible layers of the line-dot laser are conceivable.

• The line is in a horizontal position.
• The line is in plumb so that the point mark lies in a horizontal position.
• The line is aligned so that the dot mark is over the module and in plumb.

The combinations of these three layers by using three such optical units is conceivable in the applications.

Orientations of the Line Multibeam Laser:

Two possible layers of the line-multibeam laser are conceivable, namely the laser align so that the two beam spots are in the solder, or the laser so align that the two beam points and the point mark in horizontal Location lie.

Fig. 1, 2

zeigen in schematischer und teilweise geschnittener Draufsicht zwei Ausführungsformen der erfindungsgemäßen Vorrichtung zum Erzeugen und Projizieren von Lichtmarken.

Fig. 3A, 3B

zeigen Fotografien der mit einer erfindungsgemäßen Vorrichtung zum Erzeugen und Projizieren von Lichtmarken erzeugten Lichtmarken im Nahfeld bzw. im Fernfeld.

Fig. 4A-6B

zeigen in schematischer Ansicht Details verschiedener Ausgestaltungsformen der erfindungsgemäßen Vorrichtung zum Erzeugen und Projizieren von Lichtmarken.

Fig. 7-10

zeigen verschiedene Aspekte einer anderen Ausführungsform der erfindungsgemäßen Vorrichtung zum Erzeugen und Projizieren von Lichtmarken.

Fig. 11A, 11B

zeigen zwei Module unter Verwendung der erfindungsgemäßen Vorrichtung zum Erzeugen und Projizieren von Lichtmarken.

Fig. 12-14B

zeigen in schematischer Ansicht eine mögliche Anwendung für die Module aus Fig. 11A und 11B.

These and further aspects of the present invention will now be explained in more detail by means of preferred embodiments on the basis of the attached figures.

Fig. 1, 2

show in schematic and partially cut plan view two embodiments of the inventive device for generating and projecting light marks.

Fig. 3A, 3B

show photographs of the generated in the near field or in the far field with a device according to the invention for generating and projecting light marks.

Fig. 4A-6B

show in schematic view details of various embodiments of the inventive device for generating and projecting light marks.

Fig. 7-10

show various aspects of another embodiment of the inventive device for generating and projecting light marks.

Figs. 11A, 11B

show two modules using the inventive device for generating and projecting light marks.

Fig. 12-14B

show a schematic view of a possible application for the modules of FIGS. 11A and 11B.

Hereinafter, the same reference numerals designate and / or function similar or identical components or assemblies, without in any case their Occurring a detailed description of these components or assemblies is repeated.

Fig. 1 is a schematic plan view of an embodiment of the invention Device 1 for generating and projecting light marks.

Main components of the device 1 are the light source device Q, the Kollimationsoptik K and the projection optics P. The light source device Q generates primary light in the form of a primary light beam L1. The collimation optics K takes at least part of the primary light beam L1 and forms from this a secondary light beam L2, which in comparison collimated to the primary light beam L1, parallelized and optionally is widened. Furthermore, the Kollimationsoptik K is the secondary Light beam L2 emitted or emitted in a directed manner. This is done in such a way that the projection optics P provided in the beam path at least partially irradiated. The projection optics P is the embodiment 1 essentially of a cylindrical lens Z. In Fig. 1 is a Cross section through the entire optical arrangement of the device according to the invention 1, so that the cylindrical lens Z of the projection optics P here in Form of a circle appears.

According to the invention, the cylindrical lens Z is so with the secondary light beam L2 is applied to a cylinder section area ZA of the cylinder lens Z by a central beam L2Z of the secondary light beam L2 in Essentially completely irradiated. At the same time there is a directly adjacent to it Edge beam L2R of the secondary light beam L2 am Mantle M of the cylindrical lens Z directly and in a substantially unhindered form past, in the form of an edge beam L3R of the tertiary light beam L3. The central beam L2Z of the secondary light beam L2 undergoes refraction interaction with the material of the Cylindrical lens Z of the projection optics P. This is the central beam L2Z scattered, widened or spread, so that the individual rays of the the cylinder lens Z leaving central beam L3Z substantially in a well-defined plane scattered across the room to measure.

In the embodiment of FIG. 1, two marginal rays L2R and L3R, respectively, of the secondary light beam L2 and the tertiary light beam L3 are provided. These edge beams L2R, L3R lead in the application to the formation of dot marks MP, when an object, for. B. in the form of a wall W, is hit by the tertiary light beam L3. In the arrangement of FIG. 1, the so-called near field is shown, in which the two boundary beams L2R, L3R still lead to separated point marks MP.
At the same time, the corresponding line mark ML is also shown on the wall W, which is generated by the corresponding central beam L3Z of the tertiary light beam L3.

The peripheral rays L3R of the tertiary light beam L3 thus form Beam LMP for point marks, while the central beam L3Z of the tertiary light beam L3, a beam LML for the line mark forms.

To influence the geometry of the secondary light beam L2 and the corresponding edge beams L2R and central beams L2Z is in the embodiment 1 between the collimation optics K and the projection optics P a diaphragm device B is provided.

FIG. 2 shows a structure similar to the construction of FIG. 1 for a device according to the invention Device 1 for generating and emitting light marks. There, the light source device Q consists of a laser diode or of a Laser diode array. Furthermore, the collimation optics is thereby more concrete, that here indicated the various optical input and output lens systems are. A diaphragm as in the embodiment of Fig. 1 is shown in the Kollimationsoptik K integrated designed provided.

FIG. 3A shows in the form of a photograph the light marks projected onto the wall W. in the form of the line mark ML and in the form of the two point marks MP, like them already schematically indicated in Fig. 1. In this respect, Fig. 3A shows the conditions of the radiation field in the near field, ie the so-called near field the intensity distribution.

In contrast, Fig. 3B illustrates the intensity distribution in the form of a photograph in the so-called far field, so comparatively far from the device 1 for generating and projecting light marks. Have along due to the properties of the optical arrangement and the used Light the two marginal rays L3R of the tertiary light beam L3 through Interference superimposed, so that in addition to the line mark ML on the wall W now only a single superimposed point mark MP is recognizable.

FIGS. 4A to 5B illustrate various geometric relationships between the secondary light beam L2 of the diaphragm B or B used Aperture device B and the cylindrical lens Z of the projection optics P.

In the following figures, it is assumed that the cylindrical lens Z of the Projection optics P is based on a circular cylinder, which as a base a Circle having the radius R has. Accordingly, in the following figures the cylindrical lens Z an effective or optical effective diameter D, which 2 times the radius R corresponds. All other information is therefore relative information Compared to the radius R of the cylindrical lens Z underlying circle base.

Furthermore, it is assumed below that the secondary light beam L2 has an elliptical cross section with a large semiaxis a and a small semi-axis b.

In the embodiment of FIG. 4A, the large semiaxis a is perpendicular to Symmetry axis X of the cylindrical lens Z oriented and corresponds approximately to 8 times Radius of the cylindrical lens Z or the simple optical effective diameter D of the cylindrical lens Z. The small semiaxis b of the secondary light beam L2 is aligned parallel to the axis of symmetry X of the cylindrical lens Z and corresponds in extent to twice the radius R of the cylindrical lens Z or the optical effective diameter D of the cylindrical lens Z. In the embodiment Fig. 4A is a circular aperture B with a diaphragm diameter Rkb used, which is twice the optical effective diameter D of the cylindrical lens Z, ie 4 times the radius of the cylindrical lens Z corresponds. The aperture B and the Secondary light beams L2 are arranged concentrically with each other. shown are also the marginal rays L2R of the secondary light beam L2, which run past the jacket M of the cylindrical lens Z. It is also recognizable Central beam L2Z of the secondary light beam L2, which the Cylinder section range ZA of the cylindrical lens Z of the projection optics P substantially completely irradiated.

In contrast to FIG. 4A, a rectangular diaphragm B is used in FIG. 4B. This has a longitudinal edge or long edge c = 5 R = 2.5 D, which perpendicular to the axis of symmetry X of the cylindrical lens Z. The small edge d = 3 R = 1.5 D is aligned parallel to the axis of symmetry X of the cylindrical lens Z. Also in this arrangement is the cross section of the secondary light beam L2 formed concentric with the rectangular aperture.

In the embodiment of Figs. 5A to 6B, the major semi-axis a is the cross-section of the secondary light beam L2 aligned in parallel to the axis of symmetry X of the cylindrical lens Z and has an extension which is 12 times Radius R of the cylindrical lens Z or 6 times the optical effective diameter D corresponds to the cylindrical lens Z. The small semiaxis b of the cross section of the secondary light beam L2 is in each case perpendicular to the axis of symmetry X. the cylindrical lens Z is formed and has an extension which is 4 times Radius R of the cylindrical lens Z or the double optical effective diameter D corresponds to the cylindrical lens Z.

In the embodiments of FIGS. 5A and 5B circular apertures B are provided, concentric with the cross section of the secondary light beam L2 and with radii Rkb = 4 R = 2 D and Rkb = 6 R = 3 D.

In Figs. 6A and 6B, a rectangular aperture B is provided, and Although with a long edge c parallel or perpendicular to the axis of symmetry X the Cylindrical lens Z. The long edge c has an extension 4 times the radius R of the cylindrical lens (2 times the optical effective diameter D) or 6 times Radius of the cylindrical lens Z (3 times the optical effective diameter D) corresponds. The short edge d of the rectangular shutter B of Figs. 6A and 6B satisfies the conditions d = 3 R = 1.5 D or d = 4 R = 2 D.

FIGS. 7 to 10 show embodiments of the device 1 according to the invention for generating and projecting light marks, in which the cylindrical lens Z the projection optics P is based on a skew cylinder, with opposite the axis of symmetry X of the cylindrical lens Z by 45 ° inclined end surfaces A, which Moreover, such are mirrored and arranged that a part of the secondary Light beam L2 can be reflected on it so that perpendicular to the projection level for the line mark ML external and further point marks (MPe) can be projected and mapped. These additional and external Dot marks or spot marks MPe become over at the mirroring end faces A of the cylindrical lens Z reflected light beams LMMe mediates, as the in Fig. 7 is shown schematically.

FIG. 8 shows a further schematic and sectional side view of FIG. 7 illustrated situation, which also provides further dimensioning information are. The diameter of the cylindrical lens Z is again denoted by R. Of the Cylinder section area ZA, which is formed, the line mark for generating to project, here has a height which dern 1.8 times the radius R of Cylindrical lens Z corresponds.

Fig. 9 shows details with respect to the secondary light beam L2 and the Aperture B, as in a particular embodiment of the in Figs. 7 and 8 shown device 1 for generating and projecting light marks used could become.

Also in the embodiment of FIG. 9, the large semiaxis a, which is shown in FIG. 9 not shown, aligned parallel to the axis of symmetry X of the cylindrical lens Z. and has an extension which is 9 times the radius R of the cylindrical lens Z or 4.5 times the effective optical diameter D of the cylindrical lens Z equivalent. The small semiaxis b of the cross section of the secondary light beam L2 is extended perpendicular to the axis of symmetry X of the cylindrical lens Z. and has an extension of about 3 times the radius R of the cylindrical lens Z. or 1.5 times the effective optical diameter D of the cylindrical lens Z. The diaphragm B consists of a circular plate with three recesses B1, B2 and B3. The first recess B1 has Recheckform for generating the marginal rays L2R and the central beam L2Z to generate the actual Line mark ML and the actual point mark MP. The long edge c = 3.5 R = 1.75 D is oriented perpendicular to the axis of symmetry X of the cylindrical lens Z, whereas the short edge d = 1.6 R = 0.8 D parallel to the axis of symmetry X the cylindrical lens Z is arranged. The recesses B2 and B3 of the diaphragm device B are essentially similar, circular and have a radius Rkb = 1.7 R = 0.85 D. These circular recesses B2 and B3 are with the cylinder end faces A, which are mirrored, formed approximately concentric.

Fig. 10 shows a perspective view from above of the conditions as they are can result in the application of the arrangement shown in FIGS. 7 to 9. In the arrangement of Fig. 10, the incident secondary light beam is L2 not shown. On the cylindrical lens Z of the projection optics P in shape of a skew cylinder, upper and lower end surfaces A are formed as mirrors. At these reflective end surfaces of the cylindrical lens Z are shares of here not shown secondary light beam L2 perpendicular to the top or down reflected, in the form of beams LMMe for trainee external point markers MPe. The phrase "vertical" refers to that plane, that of the tertiary beam L3Z or the line mark beam LML is formed. Shown are also the Dot marker bundle LMP, which again in the form of marginal rays L3Z of the tertiary beam L3 appear in appearance.

FIGS. 11A and 11B show devices 1 according to the invention once again are formed in the form of modules A and B, in side cross-sectional views. The module A corresponds approximately to an embodiment, as they is shown in Figs. 7 to 10. By contrast, module B essentially has the structure as shown in Figs. 1 to 6B.

Fig. 12 shows an arrangement of the modules A and B in the region of a positioning device 10. This positioning device 10 is formed by a Modulnträger G, z. B. in the form of a housing, in or on which the modules A and B, and optionally also other modules are attached and arranged. The order The modules A and B are such that the tertiary light beams L3 each spanned planes are approximately perpendicular to each other and that the straight lines defined by the respective dot mark beams LMP also perpendicular to each other. The housing or the module carrier G is attached to a shuttle thread F such that when vertically aligned of the pendulum thread F and the module carrier G formed pendulum, z. B. in the gravitational field of the earth, the shuttle thread F on the defined by the module A. Level is perpendicular and to the plane defined by the module B. runs parallel.

The arrangements shown in FIGS. 13 to 14B describe possible positioning and orientations, as in the embodiment according to FIG. 1 to 6B or in the embodiment according to FIGS. 7 to 10 are conceivable. According to Fig. 13, an arrangement according to FIGS. 1 to 6B, three different assume basic positions to each other. In the embodiment 7 to 10, however, are only two fundamentally different positions possible in two-dimensional space.

LIST OF REFERENCE NUMBERS

1

Inventive device for generating and projecting light brands

a

Large semi-axis of the secondary light beam L2

A

end face

b

Small semi-axis of the secondary light beam L2

B

aperture means

c

First edge of the rectangle

d

Second edge of the rectangle

D

Collimation optics, collimator, effective or effective diameter, Effective diameter of the cylindrical lens

L1

Primary light beam, primary light, primary light

L2

Secondary light beam, secondary light, secondary light

L2R

Rand ray beam

L2Z

Central ray beam

L3

Tertiary ray of light, tertiary light

L3R

Edge beam, beam for point mark

L3Z

Central beams, beams for line mark

LM

Mark-ray beam

LML

Beam for line mark

LMP

Beam for point mark

M

coat

MPe

External and further point mark

ML

line brand

MP

point mark

P

projection optics

Q

Light source means

R

Radius of the cylindrical lens Z

Rkb

Radius circular aperture

W

wall

X

Symmetry axis of the cylindrical lens Z

Z

cylindrical lens

ZA

Cylinder section of the cylindrical lens

Claims (18)

Apparatus for generating and projecting light marks, comprising: a light source device (Q) which is designed and provided for generating and emitting a primary light beam (L1), a Kollimationsoptik (K), which is for receiving the primary light beam (L1) and its collimation, parallelization and thereby expansion into a secondary light beam (L2) and for the directed emission of the secondary light beam (L2) formed and provided, and a projection optics (P), which for receiving at least a portion (L2Z) of the secondary light beam (L2) and for converting the secondary light beam (L2) into at least one for at least one light mark (ML, MP) suitable tertiary light beam (L3) or marker beam (LM) and its output and thereby projection of at least one light mark (ML, MP) is formed and provided, characterized, is that the projection optics (P) to the secondary light beam (L2) or a part (L2Z) thereof in such a manner acted upon, in that a region (ZA) of the projection optics (P) is substantially completely transilluminable substantially from a central ray bundle (L2Z) of the secondary light ray bundle (L2), that at least one edge beams (L2R) of the secondary light beam (L2) adjacent to the central beams (L2Z) of the secondary light beam (L2) at the edge or shell of the portion of the projection optical system (P) can be emitted directly by, in that the central ray bundle (L2Z) of the secondary light beam (L2) is dispersible by interaction with the cylindrical lens (Z) and as part (L3Z) of the tertiary light beam (L3) or as a line mark beam (LML) for a light marker (ML) substantially in the form of a Line is projectable and in that the at least one marginal ray bundle (L2R) of the secondary light beam (L2) is projectable as a part (L3R) of the tertiary light beam (L3) or as a dot mark bundle (LMP) for a light mark (MP) substantially in the form of a dot or spot. Device according to claim 1,
characterized, that the projection optics (P) has a cylindrical lens (Z) and that the cylindrical lens (Z) with the secondary light beam (L2) or a part (L2Z) of which is acted upon in such a way, in that a cylindrical portion region (ZA) of the cylindrical lens (Z) as the region (ZA) of the projection optics (P) essentially differs substantially from a central ray bundle (L2Z) of the secondary light beam (L2) for the light marker (ML) substantially in the form of a line is completely durchbarbar and in that at least one peripheral ray bundle (L2R) of the secondary light ray bundle (L2) adjacent to the central ray bundle (L2Z) of the secondary light ray bundle (L2) for the light marker (MP) substantially in the form of a dot or a spot immediately at the edge or mantle of the cylindrical segment region (ZA) is send out. Device according to one of the preceding claims,
characterized in that the light source device (Q) is designed to generate and emit substantially coherent and / or monochromatic light for the primary light beam (L1). Device according to one of the preceding claims,
characterized in that the light source means (Q) comprises or is formed by a laser light source. Device according to one of the preceding claims,
characterized in that the light source means (Q) comprises or is formed by a laser diode or an array of a plurality of laser diodes. Device according to one of the preceding claims,
characterized in that for beam shaping with respect to the secondary light beam (L2) between the collimating optics (K) and the projection optics (P), a diaphragm device (B) is provided. Device according to claim 6,
characterized in that the diaphragm device (B) has or is formed by a circular diaphragm or a rectangular diaphragm, which is provided and arranged in each case in particular substantially concentric with the cross section of the secondary light beam (L2). Device according to one of the preceding claims,
characterized in that the cylindrical lens (Z) is designed in the form of a circular cylinder, in particular with a given radius (R) for the underlying circular base area and with an axis of symmetry (X). Device according to one of the preceding claims,
characterized in that the cylindrical lens (Z) has an optical effective diameter (D), which in particular corresponds to twice the radius (R) of the underlying circular base area. Device according to one of the preceding claims,
characterized in that by selecting the type and geometry of the light source device (Q), the Kollimationsoptik (K) and / or their geometric and / or positional relationship to each other, the secondary light beam (L2) can be formed with a substantially elliptical cross-section, with a semi-major axis (a) and a semi-minor axis (b). Device according to claim 10,
characterized in that the large semiaxis (a) of the cross section of the secondary light beam (L2) in approximately perpendicular to the axis of symmetry (X) of the cylindrical lens (Z) is selected to be running and formed. Device according to claim 11,
characterized, that the semi-major axis (a) in about 8 times the radius (R) of the cylindrical lens (Z) and about 4 times the effective optical diameter (D) corresponds to the cross section of the secondary light beam (L2) of the cylindrical lens (Z) and / or that the small semiaxis (b) of the cross section of the secondary light beam (L2) corresponds approximately to twice the radius (R) of the cylindrical lens (Z) or 1 times the effective diameter of the cylindrical lens (Z). Device according to one of claims 11 or 12,
characterized, that a circular aperture (B) is provided whose radius (Rkb) corresponds approximately to four times the radius (R) of the cylindrical lens (Z) or approximately twice the effective optical diameter (D) of the cylindrical lens (Z) or that a rectangular aperture (B) is provided having a first edge (c) perpendicular to the axis of symmetry (X) of the cylindrical lens (Z) which is approximately 3 times the radius (R) of the cylindrical lens (Z) or about 1.5 -fold optical effective diameter of the cylindrical lens (Z) corresponds, and with a second edge (d) parallel to the axis of symmetry (X) of the cylindrical lens (Z), which is about 5 times the radius (R) of the cylindrical lens (Z) or about 2.5 times the optical effective diameter (D) of the cylindrical lens (Z) corresponds. Device according to claim 10,
characterized in that the large semiaxis (a) of the cross section of the secondary light beam (L2) is chosen to be approximately parallel to the axis of symmetry (X) of the cylindrical lens (Z) and designed to run. Device according to claim 14,
characterized, that the large semiaxis (a) of the cross section of the secondary light beam (L2) corresponds approximately to 12 times the radius (R) of the cylindrical lens (Z) or approximately 6 times the effective optical diameter (D) of the cylindrical lens (Z) and / or that the small semiaxis (b) of the cross section of the secondary light beam (L2) corresponds approximately to four times the radius (R) of the cylindrical lens (Z) or approximately twice the effective diameter (D) of the cylindrical lens (Z). Device according to one of claims 14 or 15,
characterized, that a circular aperture (B) is provided whose radius (Rkb) is approximately 4 times or 6 times the radius (R) of the cylindrical lens (Z) or approximately 2 times or approximately 3 times the optical effective diameter (D ) corresponds to the cylindrical lens (Z) or in that a rectangular diaphragm (B) is provided, with a first edge (c) perpendicular to the axis of symmetry (X) of the cylindrical lens (Z), which is approximately 3 times or approximately 6 times the radius (R) of the cylindrical lens (Z) or is about 1.5 times or about 3 times the optical effective diameter (D) of the cylindrical lens (Z) corresponds, and with a second edge (d) parallel to the axis of symmetry (X) of the cylindrical lens (Z), which about the 4th -fold radius (R) of the cylindrical lens (Z) or about twice the effective optical diameter (D) of the cylindrical lens (Z) corresponds. Device according to one of the preceding claims,
characterized, in the form of a swash cylinder is constructed that the cylindrical lens (Z) and has at least one with respect to the axis of symmetry (X) of the cylindrical lens (Z) inclined base surface (A) or end face (A), that the base (A) or end face (A) is formed mirrored, and in that at least a part of the secondary light beam (L2) is reflectable by the base area (A) or end area (A) such that outside the plane formed by the device (1) and the tertiary light beam (L3Z, LML) for the light mark is an external and further light mark (Me) substantially in the form of a dot or spot can be imaged or projected. Device according to claim 17,
characterized in that both base surfaces (A) or end surfaces (A) of the cylindrical lens (Z) are inclined, mirrored and formed such that two external and further light marks (Me) can be imaged or projected substantially in the form of a dot or spot.

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